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Homework Help: How do RC circuits integrate

  1. Jan 8, 2012 #1
    1. The problem statement, all variables and given/known data
    What causes integration of V_{in} within an RC circuit?

    2. Relevant equations
    Z= R + X_C
    = R - j/(ωC)

    Z is the impedance of the circuit, j=(-1)^.5, ω is angular frequency, and C is the capacitance.

    3. The attempt at a solution
    I think integration is the capacitor's way of "remembering" how much energy it has to put back into the circuit.
  2. jcsd
  3. Jan 9, 2012 #2


    User Avatar

    Staff: Mentor

    For this question, it is probably best to stay in the time domain, and just start with the differential equation that relates current and voltage for a capacitor. Can you show us that equation and suggest how you can use it to answer this question?
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